Question 396321
How do I find the sample size of a sample when I am given the Margin of Error? An example is I need to find the sample size when my margin of error is +- 4%.
ME = zs/sqrt(n)
4 = zs/sqrt(n)
--------------------
You would need to know Z and s.
----
Cheers,
Stan H.
==================

I know the formula for finding the margin of error for a sample size, which would be {{{1 / sqrt(n)}}} where (N) is the sample size. To get a sample size from the margin of error, which in this case is 4% I tried {{{ 1 * .04^2}}} and I get 4 *10^4. (I put that in scientific notation the best I knew how.) I also tried {{{1/.04^2}}}
I don't know how to get the Sample Size when given the margin of error.